def copyFSubTree(self):
        if self.hasName('ddt'):
            if self.ddtTopNode == True:
                fTree = IrNodeNumericalNull()
            else:
                childTree = self.getArgumentNode(0)
                fTree = childTree.FSubTree()
        else:
            fTree = IrNodeNumerical.copyFSubTree(self)

        return fTree
 def __init__(self, dataType, value):
     IrNodeNumerical.__init__(self)
     self.dataType = dataType
     self.value = value
 def __init__(self, name):
     IrNodeNumerical.__init__(self)
     self.name = name
     self.indentStr = ''